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Advent Systems, Inc.
  • 435 W. Fullerton Avenue
  • Elmhurst, IL 60126
Advent Systems, Inc. logo

Advent Systems, Inc. is a low voltage systems integrator specializing in: Access control and security management systems; security and burglar alarms; audio-visual systems including conference rooms, board rooms, stages, auditoriums and studios; paging, sound masking and emergency evacuation; closed-circuit TV systems for IP and analog; and network communications cabling.

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Deerfield Electric Co., Inc.
  • 3680 Commercial Ave.
  • Northbrook, IL 60062

Deerfield Electric Contractors are union contractors that have been in business for over 45 years. They are a part of National Electrical Contractors Association, the Deerfield Chamber of Commerce, and the Northbrook Chamber of Commerce.  Deerfield Electric Contractors perform electrical work of all kinds, including service, maintenance, and repair work.

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Eitel Heinemann Mechanical Services
  • 1475 Busch Parkway
  • Buffalo Grove, IL 60089
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Eitel Heinemann Mechanical Services is a full service mechanical HVAC contractor for commercial, industrial and institutional buildings in the Chicago metropolitan area. We specialize in sheet metal, piping, temperature controls, service, repair and design, serving buildings and people since 2004.

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Hardt Electric, Inc.
  • 4909 N. Elston Avenue
  • Chicago, IL 60630
Hardt Electric, Inc. logo

Founded in 1973, Hardt Electric has become one of the most reputable and reliable electrical contractors in Chicago. With roots stretching back to the 1930s, Hardt Electric has grown significantly over the years and serves the remodeling, manufacturing and residential industries.

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Hartmann Electric Co. Inc.
  • 30 Martin Lane
  • Elk Grove Village, IL 60007
Hartmann Electric Co. Inc. logo

Hartmann Electric is a specialty design/build electrical, telecommunications, and data service company that installs, integrates, updates, and maintains highly complex, technical systems for industrial, transportation, manufacturing, utilities, institutional and service companies.

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Kelso-Burnett Co.
  • 5200 Newport Drive
  • Rolling Meadows, IL 60008
Kelso-Burnett Co. logo

Serving Illinois since 1908, Kelso-Burnett's uncompromised commitment to excellence and innovation has helped us grow into one of the oldest and largest full-service electrical, communications & life safety contractors in the region. We are an employee-owned company that combines advanced technologies with superior workmanship to provide the highest-quality design, construction and project management available in the electrical contracting industry.

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Kroeschell, Inc.
  • 3222 N. Kennicott Avenue
  • Arlington Heights, IL 60004

For 130 years, Kroeschell, Inc. has been a recognized leader in mechanical and electrical engineering, as well as industrial outsourcing. The company is a commercial and industrial contractor and design/builders for: HVAC; Piping; Plumbing; Electrical; and Analog/digital control systems. Kroeschell also specializes in temperature controls, engergy management, plant operations and 24-hour mechanical maintenance. 

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Sharlen Electric Company
  • 9101 S. Baltimore
  • Chicago, IL 60617
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Sharlen Electric Company is a full service electrical contractor that performs a wide range of electrical services, including: commercial; industrial; communications; underground; and emergency. Our highly trained crews are experienced in high and medium voltage switchgear installation, PLC installation, automation programming and more. Our communication services include all aspects of low voltage wiring including fiberoptics, telephone and data systems. We are committed to providing you with the highest quality electrical service at competitive prices. We have handled with success some of the most challenging electrical contracting projects in the greater Chicago area and Northwest Indiana. We are a fully licensed, bonded and insured contractor. There is no job too big or small for our company.

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